(19)
(11) EP 1 295 758 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
08.09.2004 Bulletin 2004/37

(43) Date of publication A2:
26.03.2003 Bulletin 2003/13

(21) Application number: 02019713.3

(22) Date of filing: 03.09.2002
(51) International Patent Classification (IPC)7: B60R 21/01, G08C 15/04, F42D 1/05
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 20.09.2001 US 957087

(71) Applicant: Breed Automotive Technology, Inc.
Lakeland, Florida 33807-3050 (US)

(72) Inventors:
  • Griggs, James W., III
    Bradenton, Florida 34744 (US)
  • Gagnon, Scott D.
    Dover, Florida 33527 (US)
  • Boyd, Clinton
    Orlando, Florida 32821 (US)
  • Canterberry, J.B.
    Apollo Beach, Florida 33565 (US)

(74) Representative: Gislon, Gabriele 
Marietti, Gislon e Trupiano S.r.l. Via Larga, 16
20122 Milano
20122 Milano (IT)

   


(54) Frequency addressable ignitor control device


(57) A frequency addressable ignitor control device utilizes electronic bandpass filters (108) tuned to a unique center frequency and bandwidth for each ignitor (112 - 115). Energy generated by the system's controller (116) comprises one or more narrow pulses whose center frequency corresponds to one or more bandpass filter/ignitor assemblies (104- 107) and sufficient energy for activation. A plurality of bandpass filter/ignitor assemblies are connected in parallel in the system. The controller (116) generates electrical pulses of different frequencies transferred to the plurality of bandpass filter/ignitor assemblies (104 - 107) via a two wire ignitor bus. Bandpass filter/ignitor assemblies whose filter allows sufficient energy to pass to an ignitor bridge element initiates the ignitor's explosive charge. The controller (116) generates energy to the ignitor with appropriate sequence of frequencies and delays resulting in the desired detonation of appropriate individual bandpass filter/ignitor assemblies (104 - 107) in the desired sequential order each with the desired delays.






Search report